Flora and fauna (= plants and animals) Fauna

decay

1. 
   ​the process or result of being destroyed by natural causes or by not being cared for (= of decaying)
   
   • 
     tooth decay
     
   • 
     The landlord had let the building fall into decay.
     
   • 
     The smell of death and decay hung over the town.
     
   • 
     The decay of the wood will spread if it is not removed.
     

sub-

​(in nouns and adjectives)below; less than

• 
  sub-zero temperatures
  
• 
  a subtropical (= almost tropical) climate
  
• 
  substandard
  

extract

extract something (from something) to remove or obtain a substance from something, for example by using an industrial or a chemical process

• 
  a machine that extracts excess moisture from the air
  
• 
  The Egyptians used a primitive form of distillation to extract the essential oils from plants.
  
• 
  Animals take in food and extract nutrients from it.
  

duplicate

duplicate something to make an exact copy of something

• 
  Please keep the duplicated form and send us the original.
  
• 
  This is a natural look which you can easily duplicate at home.
  

feasibility

1. 
   ​the quality of being possible and likely to be achieved
   
   • 
     a feasibility study on the proposed new airport
     
   • 
     I doubt the feasibility of the plan.
     

liquid

​ a substance that flows freely and is not a solid or a gas, for example water or oil

• 
  She poured the dark brown liquid down the sink.
  
• 
  restrictions on passengers carrying liquids in their hand luggage
  
• 
  a flammable liquid
  
• 
  the transition from liquid to vapour